Incandescent gas-lamp.



No. 698,225. Patented Apr. 22, fiu.

A. `B. `FIEDELL.

I'NCANDESCENT GAS LAMP.

(Application led July 1,- 1901.),

d (No Mo`del.)

fz Wauu! WJTNESSES INVENTOR E UNITED STATES PATENT OEEICE.N

ALvILT E. EEDELL, on CHICAGO, ILLINOIS.

INGANDESCENT GAS-LAM P.

SPECIFICATION formingpart of Letters Patent No. 698,225, dated April 22, 1902. Application iiled J'uly 1, 1901. Serial No.. 66,703. (N o model.)

To a/ZZ whom it may concern:

Be it known that I, ALVIN B. REDELL, a citizen of the United States, residing at Chicago, i in the county of Cook and State of Illinois,

have invented certain new and useful Improvements in Incandescent Gas-Lamps, of which the following isa specilication.

One of the objects of this invention is the production of an incandescent gas-lamp ern.-

bodying the improvements herein shown and described. v

Afurther object is the production of means for supporting the mantle of a lamp of this character upon a delicate spring, whereby the mantle will be saved from shocks and blows received by the lamp. As is Well known, the mantle of an incandescent lamp is extremely fragile and easily broken-so delicate, in fact, that any considerable shock received by the lamp-body shatters the mantle nnlessthe latter is protected in some manner. In the accompanying drawings, Figure lis a vertical central section through a lampburner embodying the features of my invention. Fig.V 2 is a plan view of. said burner. Fig. 3 is a vertical central section through the spring-holding tube on dotted line 3 3 of Fig. 5. Fig. 4 is a vertical section through said tube on dotted line 4 4 of Fig. 5. Fig. 5 is a plan View of said spring-holding tube. Fig. 6 is a vertical central section through the mantle-supporting shell. Fig. 7 is atop plan view of said shell. Fig. Sis a side elevation, partly in section, representing the cross-arm in said mantle-supporting shell. Fig. 9 is a top view of said cross-arm. Fig. 10 is a vertical central section, and Fig. 1l an end view, of a tip adapted to rest upon the mantle-supporting spring and project into the conical socketformedin said cross-arm. Fig. 12 is a side elevation, and Fig. 13 a top plan view, of a collar adapted to fit around the mantle-sup` porting shell to receive the mantle-supporting wire. A

Like letters of reference indicate corresponding parts throughouttheseveral views. In the embodiment herein shown of this invention the mantle-supporting means is illustrated as an attachment adapted to be applied to any incandescent gas-lamp of common form. It, however, may be formed integral with the lamp-body.

V-tioned herein.

A is the gallery of the burner, surrounding the central Bunsen tube A. I provide a tube ladapted to iit over the Bunsen tube A',

land in the upper end of this latter tube form the clip B4 to grasp the lower end of theiexible spring-holding Wire B5, which rises vertically and axially through said tube B, extending for some distance above the upper end of said tube. with the diametrically opposite locking projections B6 for a purpose to be later men The yoke B3 is provided with the shoulders B7, adapted to receive the conical coiled mantle-supporting spring C, which surrounds the spring-holding wire B5. The mantle-supporting shell D, tubular in form, is adapted Vto loosely telescope the tube B. This shell is of a largendiameter at its upper portion than near its llower end and is provided with the cross-arm D', having the conical central pocket D2, perforated at itsupper end, and the securing-ears D3, adaptedv to extend through perforations D4 in the sides ofthe shell D, and thus to hold said cross-arm in position Within the upper enlarged portion of the shell D. The conical pocket D2 is adapted to receive a cap D5, of asbestos or other non-conducting material,

The tube B is provided axially perforated to receive the spring-holding wireuB, and to rest upon the top of the conical :coil-spring C. Thus it will be seen that when theshell D is in position over thev tube B its weight will be borne by said con-A ical spring. The mantle is supported by the shell D aud is attached thereto in any convenient manner, as by the usual ring D, having a rod D7 extending upward to suspend the mantle fromits upper end, said rod being secured relative to said ring by means of the thumb-screw D8. The ring DG is held in position with relation to said shell by the notches Diin the lower side of the ring, which notches are adapted to engage the projections Dw in the shell. The location of the spring Within the central tube removes it from the heat of theA ame,and the non-con- Ioo ducting cap further protects it from said heat. The lower annular edge of the shell D is curved inward and is adapted to embrace the locking projections BG in order to hold the mantle-supporting shell D in its lowest position against the action of its supportingspring when it is desirable to relieve said shell of the spring-action, as in transporting or shipping the lamp. The shell D Iits the tube B rather loosely, and therefore permits not only a Vertical reciprocation with relation to said tube, but also a sidewise yielding movement by reason of the exibility of the spring-holding Wire B5, in order to provide against a shock from any direction and to thereby protect the delicate mantle from being broken. Aperforated cap D11,composed of wire-gauze or other material, is adapted to rest upon the upper side of the cross-arm D and the pocket D2 thereof, and the usual Wiregauze screen D12 is placed at the upper end of the shell D. The cap D11 and the screen D12 are intended to permit the passage of the gas upward through the shell D and to prevent the flame from descending into said shell. The shellD being supported at acentral point normally stands in an upright position. Should the Weight of the mantle upon one side of the shell disturb its equilibrium, it may be readjusted by slightly bending the cross-arm, thus moving the pocket D2 relatively to the shell D.

As hereinbefore suggested, the spring-holding wire B5 acts not only asa guide to retain the conical spring C in position, but by reason of its flexibility of itself constitutes a spring to cushion lateral shocks received by the lamp.

I have shown and described my invention in the preferred form. However, I do not desire to limit myself to this construction alone, it being clear that it may be modified and changed to a considerable extent Without departing from the spirit of my invention.

I claim as my in vention- 1. In an incandescent lamp, in combination, a Bumsen tube; a mantle-supporting shell; and a spring` in said shell, mounted above the upper end of the tube, for supporting the shell with relation to the tube.

2. In an incandescent lamp, in combination, a Bunsen tube; a conical coil-spring mounted on its base above said tube; and a mantle -supporting shell surrounding said conical spring, and resting upon the smaller end of said conical spring.

3. In an incandescent lamp, in combination, a Bunsen tube; a conical coil-spring mounted on its base above said tube; and a mantle-supporting shell surrounding said conical spring, said shell having Within its upper portion an arm resting upon the smaller end of said conical spring, for supporting said shell.

4E. In an incandescent lamp, in combination, a lamp-gallery; a Bunsen tube; a man tlc-supporting shell; and aspring extending from a point above the upper end of said Bunsen tube, Which spring supports said mantle-supporting shell with relation to said tube.

5. In an incandescent lamp, in combination,alampgallery; aBunsen tube; aspringsupporting tube telescoping with said Bunsen tube; a mantle-supporting shell; and a coil-spring seated in the upper end of said spring-supporting tube, for supporting the mantle-supporting shell.

6. In an incandescent lamp, in combination,alampgallery; a Bunsen tube; a springsupporting tube telescoping with said Bunsen tube; a spring mounted in said springsupporting tube; and a mantle-supporting shell having means for mounting said shell on said spring.

7. In an incandescent lamp, in combination, alamp-gallery; aBunsentube; aspringsupporting tube telescoping with said Bunsen tube; a conical coil-spring mounted in said spring-snpportingtube; amantle-supporting shell having means for supporting said shell upon said spring; and means for attaching the mantle to said shell.

8. In a means for supporting incandescent mantles, in combination, a coil -spring; a guide-rod; a mantle-supporting shell having means for supporting said shell upon said spring; and means for attaching the mantle to said shell.

9. In a means forsupporting incandescent mantles, in combination, a coil-spring; a guide-rod extending centrally through said spring; and a mantle-supporting shell having means for su pporting said shell upon said spring and guiding it upon said guide-rod.

10. In a means for supporting incandescent mantles, in combination, a conical coilspring; a guide-rod extending centrally of said spring; and a mantle-supporting shell having an arm Within the upper portion of said shell, for supporting said shell upon said spring` and for guiding it upon said guide-rod.

ll. In an incandescent lamp, in combination, a spring-supporting tube; a conical coil-spring supported by said tube; a guiderod extending centrally of said spring; a mantle-supporting shell having an arm within the upper portion of said shell, for supporting said shell upon said spring and for guiding it upon said guide-rod; and means for attaching the mantle to said shell.

ALVIN B. REDELL.

IVitncsses:

W. W. TENNEY, L. L. MILLER.

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